Modify Your Quick Launch
First, modify your quick launch:
http://xxxxxxx/_layouts/quiklnch.aspx
Add a javaScript modal popup
Next, get the link of the item you want to add, and make sure it has the IsDlg=1 in the URL, add it as a link in the following format:
javascript:function tdql1(){SP.UI.ModalDialog.showModalDialog({url:’/xxx/Lists/xxx/NewForm.aspx?RootFolder=&IsDlg=1′,title:’Press Publication’})}tdql1();